diff -r 000000000000 -r 6474c204b198 dom/network/src/Connection.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/dom/network/src/Connection.cpp	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,102 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include <limits>
+#include "mozilla/Hal.h"
+#include "mozilla/dom/network/Connection.h"
+#include "nsIDOMClassInfo.h"
+#include "mozilla/Preferences.h"
+#include "Constants.h"
+
+/**
+ * We have to use macros here because our leak analysis tool things we are
+ * leaking strings when we have |static const nsString|. Sad :(
+ */
+#define CHANGE_EVENT_NAME NS_LITERAL_STRING("typechange")
+
+namespace mozilla {
+namespace dom {
+namespace network {
+
+NS_IMPL_QUERY_INTERFACE_INHERITED(Connection, DOMEventTargetHelper,
+                                  nsINetworkProperties)
+
+// Don't use |Connection| alone, since that confuses nsTraceRefcnt since
+// we're not the only class with that name.
+NS_IMPL_ADDREF_INHERITED(dom::network::Connection, DOMEventTargetHelper)
+NS_IMPL_RELEASE_INHERITED(dom::network::Connection, DOMEventTargetHelper)
+
+Connection::Connection()
+  : mType(static_cast<ConnectionType>(kDefaultType))
+  , mIsWifi(kDefaultIsWifi)
+  , mDHCPGateway(kDefaultDHCPGateway)
+{
+  SetIsDOMBinding();
+}
+
+void
+Connection::Init(nsPIDOMWindow* aWindow)
+{
+  BindToOwner(aWindow);
+
+  hal::RegisterNetworkObserver(this);
+
+  hal::NetworkInformation networkInfo;
+  hal::GetCurrentNetworkInformation(&networkInfo);
+
+  UpdateFromNetworkInfo(networkInfo);
+}
+
+void
+Connection::Shutdown()
+{
+  hal::UnregisterNetworkObserver(this);
+}
+
+NS_IMETHODIMP
+Connection::GetIsWifi(bool *aIsWifi)
+{
+  *aIsWifi = mIsWifi;
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+Connection::GetDhcpGateway(uint32_t *aGW)
+{
+  *aGW = mDHCPGateway;
+  return NS_OK;
+}
+
+void
+Connection::UpdateFromNetworkInfo(const hal::NetworkInformation& aNetworkInfo)
+{
+  mType = static_cast<ConnectionType>(aNetworkInfo.type());
+  mIsWifi = aNetworkInfo.isWifi();
+  mDHCPGateway = aNetworkInfo.dhcpGateway();
+}
+
+void
+Connection::Notify(const hal::NetworkInformation& aNetworkInfo)
+{
+  ConnectionType previousType = mType;
+
+  UpdateFromNetworkInfo(aNetworkInfo);
+
+  if (previousType == mType) {
+    return;
+  }
+
+  DispatchTrustedEvent(CHANGE_EVENT_NAME);
+}
+
+JSObject*
+Connection::WrapObject(JSContext* aCx)
+{
+  return NetworkInformationBinding::Wrap(aCx, this);
+}
+
+} // namespace network
+} // namespace dom
+} // namespace mozilla